Question

 A book is placed in front of a concave mirror of focal length 15 cm. If the object distance is 10 cm, the image is formed


​

Answer 1

Answer:

Explanation

Given, u=−10cm,R=15cm,∴f=  

2

R

​  

=−  

2

15

​  

cm

From mirror formulae,  

v

1

​  

+  

u

1

​  

=  

f

1

​  

⇒  

v

1

​  

=  

f

1

​  

−  

u

1

​  

 

⇒  

v

1

​  

=  

10

1

​  

−  

15

2

​  

⇒v=−30

Nature of image is real and inverted.